Changes:

• Fixed a wallet.dat compatibility problem if you downgraded from 0.3.17 and then upgraded again
• IsStandard() check to only include known transaction types in blocks
• Jgarzik’s optimisation to speed up the initial block download a little

The main addition in this release is the Accounts-Based JSON-RPC commands that Gavin’s been working on (more details at http://www.bitcoin.org/smf/index.php?topic=1886.0).

• getaccountaddress
• sendfrom
• move
• getbalance
• listtransactions